Hello all... My first post here. I'm in way over my head, but I'm going to ask anyway because I want to get the best result I possibly can.
I was watching LLVJ 16 and the interview with Bill Atkinson where he described his set up for "Within the Stone" using polarizing filters on both the light source and on the lens... Cross Polarization? He took shots with and without the lens polarizing filter of a color chart and the differences were astounding.
I'm wanting to take similar types of shots of my agate collection w/ a Cannon 30D and 100mm f2.8 macro, but I'm not sure about the polarization filters I need. I'm intending to use SoLux lighting and fixtures so I'm going to have to fabricate some kind of mechanism to hold the filters on the source lights.
Would those need to be linear polarization filters since there in more or lens a fixed postion?
I'm assuming the filter on the lens would need to be a circular polariztion filter because of the AF?
Is there some geometric relationship between the polarizing filters on the light source and the lens that has to be maintained? In other words will I have the flexabilty to move the lights around to different locations relative to the camera?
Any thoughts on this set up... What I'm trying to do and/or what filters I should be looking at would be greatly appriciated!
Thank You!
Steve Wheeler